NORTENO, Panama — Dressed in sweaty surgical scrubs and grappling with a screaming 6-year-old girl as he pulled her abscessed tooth, dentist Jason Vogt didn’t look the part of a diplomat.

WASHINGTON — Global warming poses a “serious threat to America’s national security” with terrorism worsening and the U.S. will likely be dragged into fights over water and other shortages, top retired military leaders warn in a new report.

WASHINGTON — People in this country have been volunteering at record levels in the years following the terrorist attacks of Sept. 11, 2001, but that voluntary service dipped slightly in 2006, a study found.

NEW YORK — Airlines canceled 300 flights Sunday as a hard-blowing nor’easter gathered strength along the East Coast and threatened to deliver some of the worst shore flooding in 14 years.

WASHINGTON — Deep cuts in Medicare’s managed care programs seemed a sure bet last winter when Democrats, not exactly fans of health maintenance organizations, began to seek money to expand health coverage for poor children.

MEXICO CITY — Carmen Munoz ticks off the basic facts of her life in a quiet, neutral voice that belies the horrors she has known:

NORFOLK, Va. — Andrew Adams hated one soup kitchen because he believed the workers deprived him of food. He stopped staying at a homeless shelter because he was convinced the people who ran it were plotting to evict him.

5:30 p.m. BLACKSBURG, Va. -- A gunman massacred 32 people at Virginia Tech in the deadliest shooting rampage in modern U.S. history Monday, cutting down his victims in two attacks two hours and a half-mile apart before the university could figure out what was going on and get the warning out to students.